2007.07.05 16:18 "Re: [Tiff] BigTIFF extension", by Joris Van Damme

Toby,

"Because, for the first time in the 21 year history of TIFF, the structure itself has changed, and, accordingly, the 'version number' has changed from 42 to 43. (The 'version number' has, of course, been 42 since the very beginning of TIFF.) This breaks all existing TIFF readers."

The exact same thing applies to the coming of tiles in TIFF. It wasn't the structure itself that had changed at that time, but it was some of the extremely vital tags, which resulted in the same. It broke all existing TIFF readers.

...only when reading tiled files. Same applies to unknown compressor, unknown photometric, etc...

This is becoming absurd, Toby. Tiling broke all existing TIFF readers... only when reading tiled files. Sure. BigTIFF breaks all existing TIFF readers... only when reading BigTIFF files.

Best regards,

Joris Van Damme
info@awaresystems.be
http://www.awaresystems.be/
Download your free TIFF tag viewer for windows here:
http://www.awaresystems.be/imaging/tiff/astifftagviewer.html